/Engine/Source/Runtime/Datasmith/DatasmithCore/Public/IDatasmithSceneElements.h
Adds a new Material to the scene (it won't be applied to any mesh).
void AddMaterial ( const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [IDatasmithBaseMaterialElement](API\Runtime\DatasmithCore\IDatasmithBaseMaterialElement) > & InMaterial )